Bed-motion for printing-presses.



H. M. BARBER.

BBD MOTION POB. PRINTING PRESSES.

PPLIUATIOH FILED AUG. 30, 1910.

5 BHEBTB-SHEBT 1.

Patented July 23, 1912.

,Zz @enfan- H. M. BARBER.

BED MOTION FOR PRINTING PRESSES.

APPLICATION FILED AUG. so, 1910.

1,033,370. Patented July 23, 1912.

5 SHEETS SHEET 2 H. M. BARBER.

BED MOTION PoR PRINTING PRESSES.

APPLICATION TILE-D AUG. 30, 1910.

Patented Jly 23, 1912.

H. M. BARBER.

BED MOTION FOR PRINTING PRESSES.

APPLICATION FILED AUG. so, 1910,

Patented July 23, 1912.

5 SHEETS-SHEET 4.

(M Y G^AK H. M. BARBER.

BED MOTION FOR PRINTING PRESSES.

APPLICATION FILED AUG. 30, 1910. 1,033,370, Patented July 23, 19.12.

5 SHEETS-SHEET 5.

HIII

zA-uw UNITED STATES PATENT OFFICE.

HOWARD M. BARBER, OF STONINGTON, CONNECTICUT, ASSIGNOR TO C. B. COTTRELL & SONS COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW JERSEY.

BED-MOTION FOR PRINTING-PRESSES.

Specification of Letters Patent.

Patented July 23, 1912.

Application led August 30, 1916. Serial No. 579,666.

To al whom it may concern Be it known that I, HOWARD M. BARBER, a citizen of the United States, and resident of Stonington, in the county of New London and State of Connecticut, have invented a new and useful Improvement in Bed-Motions for Printing-Presses, of which the following is a specification.

This invention relates to improvements in printing presses and more particularly to bed motions for printing presses, and has for its object to provide certain improvements in the construction, arrangement and operation of the several mechanisms whereby the reciprocation, including the retardation and reversal of the bed, is accomplished in a novel manner by novel means which are simple in form and effective in operation.

A practical embodiment of the invention is represented in the accompanying drawings, in which" Figure 1 is a detail transverse vertical section through a reciprocating bed printing press with thisdnvention applied thereto. Fig. 2 is a detail view of the geared connection between the several parts at one side of the press. Fig. 3 is a detail longitudinal vertical section through the \press with the bed shown near the limit of its backward or return movement, the section being taken in the plane of the line A-A of Fig. l, looking in the direction of the arrows. Fig. 4 is a detail longitudinal vertical sectionwith the parts in the same position as shown in Fig. 3, the section being taken in the plane of the line B-B of Fig. 1, looking in the direction of the arrows. Fig. 5 is a detail longitudinal vertical section with the bed near the limit of its forward or printing movement, the section being taken in the plane of the line C-C of Fig. 1,l looking in the direction of the arrows. Fig. 6 1s a detail longitudinal horlzontal section at one side o the machine, the section being taken in the plane of the line D`D of Fig. 1, looking in the direction of the arrows, with the parts in the osition which they assume when the bed 1s near the limit of its forward or printing movement. Fig. 7 is a longitudinal horizontal section taken in the plane of the line D-D of Fig. 1, looking in the direction of the arrows, the parts being in the position, which they assume when the bed is near the limit of its backward or return movement, and Fig. 8 is a detail longitudinal horizontal section showing a modified form of cam for positively controlling the move- 'ments of the shutters.

In Figs. 3 and 4, the bed is supposed t0 be traveling on its backward or return movement and in Fig. 5, the bed is supposed to be traveling on its forward or printing movement.

The impression cylinder is denoted by l, the reciprocatingtype bed by Q, the ways by 3 and the rollers interposed between the bed and the ways by 4.

The base of the machine is denoted by 5 and the side frames by (i. Longitudinally arranged racks 7, 8, are provided along the bottom of the bed 2. A spur gear 9 is arranged to be moved laterally into and out of engagement with the rack 7, and a spur gear 10 is arranged to be moved vertically into and out of engagement with the rack 8. The gear 9 is utilized for imparting the uniform portion of the forward or printing movement of the bed and the gear 10 is utilized for imparting the uniform portion of the backward or return movement of the bed. Rotary movement is imparted in reverse directions to these gears 9 and l0, as follows. A cross-shaft 11 is mounted in suitable bearings 12, 13, which shaft is provided with a spur gear 14 meshing with a spur gear 15 on the shaft' of the impression cylinder 1. A, spur ear 1G is fixed on the shaft 11 and is provided with an enlarged hub 17. The gear 9 surrounds the hub 17 and is fixed to rotate therewith but free to slide laterally thereon by means of a feather and groove connection 18, 19. Tlfe gear 16 fixed on the shaft 11, meshes at all times with the gear 10. The gear 9 is moved laterally into and out of engagement with the rack 7 and the gear 10 is moved vertically into and out of engagement with the rack Q, as follows. A transversely arranged cam shaft 20 is driven from the shaft 11 through the train of gears 21, 22, 23. This shaft is provided with a cam 24 having a peripheral groove 25 in which is located a stud or roller QGcarried by one arm 27 of a rocking lever pivoted at 28, 29, the upper arm or yoke 30 of which lever being provided with shoes 31 arranged to travel in a circumferential groove 32 in the hub 33 of the laterally movable gear 9. This cam shaft 20 is provided with a box cam 34 having a groove 35 in which is located a stud or roller 36 carried by the depending arm 37 of a lever fixed to a rock shaft 38, the free arms 39 of which lever carry the shaft 40 on which the spur gear 10 is mounted. The groove 25 in the cam 24, is so shaped as to move the gear 9 laterally into and out of engagement with the rack 7 at the required times and the groove in the box cam 34 is so shaped that it will move the gear 10 vertically int-o and out of engagement with the rack 8 at the desired times.

The means for retarding and reversing the bed at the limits of its forward and backward movements, is constructed arranged and operated as follows. A roller 41 is eccentrically mounted on the face of the gear 16 a certain distance from the center of the shaft 11, and a roller 42 is eccentrically mounted on the gear 10 at the same distance from the center of the shaft 40, that the roller 41 is from the center of the shaft 11. It is understood that the gears 16 and 10 are of equal sizes and the rollers 41 and 42 are so arranged thatas one roller is at the limit of its downward movement, the other roller will be at the limit of its upward movement. Two laterally swinging shutters 43, 44, are independently hinged at 45 to an arm 46 depending from the reciprocating bed 2. Springs 47 48 serve to normally hold the shutters 43, 44, back out of the path of the rollers 41, 42, on the gears 16 and 10 respectively. A stationary cam 49 on the base 5 is provided with a groove 50 arranged to receive a stud or roller 51 on the shutter 44 for swinging the shutter 44 into position to becengaged by the roller 42 as the bed nears the limit of its backward or return movement, and a stationary cam 52 also on the base 5 is provided with a groove 53 arranged to engage a stud or roller 54 on the shutter 43 for swinging the shutter into position to be engaged by the roller 41 as the bed nears the limit of its forward or printing movement. The frame 46 is provided at its rear end with a vertical track 55 arranged to be engaged by the roller 41, as the shutter 44 is swung into position to be engaged by the roller 42, and this frame is further provided with a fixed vertical track 56 arranged to be engaged by the roller 42 as the shutter 43 is swung into position to be engaged by the roller 41.

In Fig. 8, means are shown for positively moving the shutters 43, 44 into and out of their operative position, the cam groove 50 for controlling the movement of the shutter 44 through the stud or roller 51, being extended so that the roller never leaves the said groove, and the cam groove 53 for controllin the movement of the shutter 43 throu the stud or roller 5 4, being also extende so that the stud or roller never leaves the said groove. This is simply a device for eliminating the necessity of using the springs 47, 48 if such an arrangement be found desirable.

In operation, let it be assumed that the bed is approaching the limit of its backward or return movement, as shown in Figs. 3 and 4. The bed is just nishing the uniform speed portion of the return movement and is about to enter the retarding and reversing portion of the movement. The roller 41 has just come into contact with the track 55 at the front end of the lreversing frame 46 and the shutter 44 has been moved into position to be engaged by the roller 42. The gear 10 is about to be moved vertically away from its rack 8. As soon as the gear 10 is free of the rack 8, the bed is controlled by the rollers '41 and 42. These rollers having a circular motion and keeping a uniform distance apart, will gradually slow down the bed until when the rollers reach a horizontal position, the bed will be brought to a stop. The rollers as they continue their circular motion, will immediately reverse the bed motion and gradually increase the speed thereof until the roller 42 reaches its lower position and the roller 41 its upper position. At this time the maximum speed of the bed has been reached. At about this time `the gear 9 will be moved laterally into engagement with the rack 7, thus bringing the bed under the control of the gear 9. As the gear 9 is engaged with its rack 7, the shutter 44 will be swung out of the way of the roller 42, thus putting the bed der the control of the gear 9. As the bed nears the limit of its forward or printing movement, as shown in Figs. 5 and 6, the vertical track 56'at the rear end of the reversing frame 46, will be brought into engagement with the roller 42 and the shutter 43 will be swung by the cam 52 and its groove 53 into position to be engaged by the roller 41. As the bed comes under the control of the rollers 41 and 42, the gear 9 is moved laterally out of its engagement with its rack 7. As the rollers travel in their circular path, the bed will be slowed down and reversed in the manner hereinbefore described with reference to the movement of the bed at the limit of its backward or return movement. As the roller 41 reaches the limit of its downward movement and the roller 42 the limit of its upward movement, the gear 10 will be moved vertically up into engagement with its rack 8 and the shutter 43 will be moved out of the path of the roller 41, thus permitting the bed to come under the control of the gear 10 for the uniform part of its return movement.

From the above description it will be seen that a very simple and effective means is employed for reciprocating the bed, including the retardation and reversal thereof. It

will furthermore be seen that during the ret-arding and reversing portion of the movement of the bed, it is under the control of two rollers, thus distributing the very great strain at this portion of the movement.

What l. claim is 1. A type bed and reciprocating mechanism therefor comprising `two oppositely driven gears, one arranged to be moved laterally and the other vertically into and out of driving engagement with said .type bed.

2. A type bed and reciprocating mechanism therefor comprising two racks carried by the bed and two oppositely driven gears, one arranged to be moved laterally and the other vertically into and out of engagement with their respective racks.

3. A type bed and reciprocating mechanism therefor comprising two oppositely driven gears, one arranged to be moved lat-- erally and the other vertically into and out of driving engagement with said type bed and operating mechanism for said gears comprising a laterally swinging lever for moving the first-named gear, a vertically swinging lever for moving the second-named gear and means for swinging said levers.

1. A type bed and reciprocating mechanism therefor comprising two oppositely driven gears, one arranged to be moved laterally and the other `vertically into and out of driving engagement with said type bed and operating mechanism for said gears comprising a laterally swinging lever for moving the first-named gear, a vertically swinging lever for moving the second-named gear and a rotary cam shaft bearing cams "or swinging said levers.

5. A type bed and reciprocating mechanism therefor comprising two oppositely driven gears, one arranged to be moved laterally and the other vertically into and out of driving engagement with said type bed and operating mechanism for said gears comprising a support for the first-named gear, a laterally swinging lever for moving the gear along the support, a vertically swinging lever carrying the second-named gear, and means for swinging said levers.

G. A type bed and reciprocating mechanism therefor comprising two oppositely driven gears, one arranged to be moved laterally and the other vertically into and out of driving engagement with said type bed and operating mechanism for said gears comprising a support for the first--named gear, a laterally swinging lever for moving the gear along the support, a vertically swinging lever carrying the second-named gear and a rotary cam shaft bearing cams for swinging said levers.

7. A type bed and reciprocating, retarding and reversing mechanism therefor comprising two oppositely driven gears arranged to be moved intov and out of driving engagement with said type bed, rollers moving around the axes of said gears, and oppositely arranged with respect to said axes and shutters carried by the type bed .arranged to be moved into and out of engagement with said rollers, and fixed vertically arranged tracksalso carried by the type bed so arranged that as one roller travels along its shutter, the other roller will travel along its track. K

8. A type bed and reciprocating, retarding and reversing mechanism therefor comprising two loppositely driven gears arranged tovbA moved into and out of driving engagement with said type bed, rollers moving around the axes of said gears and oppositely arranged with respect to said axes, a reversing frame carried by the type bed, two shutters carried by the reversing frame arranged to be moved into and out of engagement with their respective rollers and fixed vertically arranged tracks on the reversing frame so arranged that as one roller travels along its shutter the other roller will travel along its track.

9. A type bed and reciprocating, retarding and reversing mechanism therefor comprising two oppositely driven gears arranged to ,be moved into and out of driving engagement with said type bed, rollers moving around the axes of said gears and oppositely arranged with respect to said axes, a reversing frame carried by the type bed, two shutters carried by the reversing frame arranged to be moved into and out of engagement with their respective rollers and fixed vertically arranged tracks on the reversing frame so arranged that as one roller travels along its shutter the other roller will travel along its track, and fixed cams for moving the shutters into and ont of their operative positions.

10. A type bed and reversing mechanism therefore comprising a rotary shaft, fixed and loose gears driven thereby, a third gear meshing with the fixed gear and means for moving the loose gear laterally into and out of driving engagement with the type bed and for moving the third gear vertically into and out of driving engagement with the type bed without disconnecting the said third gear from the said fixed gear.

In testimony, that I claim the foregoing as my invention, I have signed my name in presence of two witnesses, this twenty seventh day of August 1910.

HOWARD M. BARBER.

'Witnesses A. R. STILLMAN, G. BURnIoK. 

